Extracting apparatus for horizontal retorts.



G. EITLE.

BXTRAGTING APPARATUS POR HORIZONTAL RETORTS. APPLICATION FILED 90127,1903.

MMJM

PATENTED MAR. 17, 1908.

' 2 sums-sum 1 m JMM 2291 No. 882,304. PATENTED MAR. 1'7, 1908. O.EITLB.

BXTRAOTING APPARATUS FOR HORIZONTAL RETORTS.

APPLICATION FILED OOT.27,1903.

2 SHEETS-SHEET 2.

CHRISTIAN EITLE, OF STUTTGART, GERMANY.

EXTRACTING APPARATUS FOR HORIZONTAL RETORTS.

Specification of Letters Patent.

Patented March. 17, 1908.

Application filed C-ctoberl27, 1903. Serial No. 178,691.

To all It/10m it may concern: j

30 it known that I, Cnms'riAN ErrLn, factory owner, and a subject of the()erman [Cmperor, residing at 2S-32 itosenbergstrasse, in the city ofStuttgart, Kingdom of Wurtemburg, and (.ierngrn Empire, have invented acertain new and useful l lxtracting Apparatus l'or Horizontal ltetorts,of which the following is a specification.

The apparatus to which this invention refers is intended fortheextraction of the contents of horizontal rctorts such as are used forthe manufacture of ilhuninating gas, that is to say for the purpose ofremoving the coke produced by the distillation of the coal, from theretort, after the distillation has been linished. The coke constitutes aglowing, coherent cake part of which adheres firmly to the walls of theretort and which upon extraction and upon being quenched becomes brokenup into )ieces and into a coarse powder, of which the former stillpossess a high heating value while the coarse powder is of no greatvalue. in view of the furnaces being worked continuously so as to becharged with fresh stull' immediately after the removal of the coke, itbecomes necessary to limit the operation of extraction to the shortesttime possible, in order to avoid loss of heat and the escape of gasesinto the working room, and in particular because the health of theworking crew is injured thereby.

The said operation has heretofore been offected almosteverywhere bymanual labor, the workman extracting the coke from the retort by meansof specially shaped extracting hooks, in' separate pieces; or in somejcases this was cilected by large complicated structures the cost ofwhich would eat up the profit.

The present invention is intended to ell'cct this operation, and isshown in Figure l in longitudinal section, in Fig. 2 in plan view, whileFigs. 3, 4 and 5 represent transverse sections and severalmodifications.

The apparatus comprises one, two or more spirals c, a which arerotatably arranged in a journal box 1). The spirals are arranged at Isuch distance from each other, that they ongage for some parts of theirlengths with each other. The turns of the spirals are in the l contrarydirection with relation to each other, the left hand spiral being madewith j right hand directed turns and the right hand i spiral with lefthand directed turns. Rotation is imparted to them for instance, as

shown in Fig. 3, by means of a pair of toothed wheels 0 c in thedirection of the arrow. The points of crossing of both spirals, have tdbe brought in contact with each other. f

The mode of operation is as followsl By the rotation of the two s iralssinrultaneo usly with the introduction 01 the same into the retort, thecake of coke is broken oil the walls by the ends of the same, the cakebeing cut into pieces by the upward turning movement of the sharplypointed ends of the spirals, so that a piece of coke of somewhat largersize, which might result from a large piece of coal, is free to dropinto the free space of the re tort without being injured. Each turn ofeach of the spirals constitutes a space which corresponds to two of thelargest sized pieces of coke, the said space remaining unchanged by thecontinued rotation, but advancing in accordance with the turn of thespirals. The said space serves for the feeding forward of the pieces ofcoke, the spirals being introduced into the retort with a speed belowthat corresponding to the hei ht of the turns.

The essential feature of the invention c0nsists in the employment beforeall of two spirals wound in a contrary direction and possessing anysuitable sectional area and in the oppositely rotating movement and inthe relative position of the turns to each other, whereb a large surfacecontrol ed by the spirals, the cake being broken off from the bottom andbeing cut up by the upward movement of the same, while the severalpieces are pushed in into the space formed by each two turns, the rapidand clean emptying of the retort upon its entire length being thussecured without any material disintegration of the cokcs. At any ratethere is not more disintegration than will occur invariably by thescraping out of the retort about 1.2 times by hand and by means of hooksor by means of motive power in particular.

. The spirals may be rotated by a crank, or by a power-wheel or by anyother suitable means, and as manydevices maybe used for such purposewhich any mechanic skilled in the art can easily supply, 1 have notdeemed it necessary to herein.

The retraction of the device from the retort is accomplished by areversal of the rotation when at the same time the coal to be coked isled to the spirals and by such reverse rotation forced into the retort,as the of the retort walls is show and describe the same retort fillsand the coal backs up against the rear end ol' such retort the spiralsby the pressure against the rear end of the retort are slowly andautomatically forced out of the same.

The journal-box I1 is n'lounted on a vertical frame a and is equipped\\ith rollers j, j, so as to be movable on said frame in a verticaldirection, in order to raise or lower the extracting; spirals for thepurpose of removing the coke from retorts arranged on different levels.Said frame a is rigidly connected to a earriagef, mounted upon a cranecarriage (Z. The, earria e f is equipped with rollers g, g and whees k,is, and said carriage f travels forward or backward in accordance withthe rotation of the spirals a. The raisingand lowering apparatus isshown in Fig. 6, the hanger it through which the spiral conveyor areciprocates being attached to the lower end of a rod 7 whichreciprocates vertically in a double slip n, carried by the cranecarriage (1, adjacent to which ournals is an idler ulley m over whichruns a chain or cable 0 W 'ch passes over the like idler pulley m and iswound up on a drum Z, mounted on thesame shaft as a similar drum in 6,hidden from view by Z, upon which second drum is wound up a chain orcable 6 which raises or lowers the journal box 'b,or there may beasingle drum having a central flange for keeping the two cables or chainsfrom interference. In any event, it will be seen that the two cablesshould be simultaneously wound up at the same rate and that this willalways keep the spiral conve er 0. in a As the spira conveyor and out ofthe retort, alon the carriage crane d on the wheels is and I, and as itdoes so the chain 0 is tightened when the spiral conveyor is being drawna is reciprocated 1n exerted upon the body of coal;

horizontal position.

the carriage f rolls out and slacked when it is being forced in butbefore the chain has slacked enough to such conveyor has alreadypenetrated into the retort and will thus he kept in the right position,although the natural friction of the Zrod h in the slip journals 1: isfrequently l sullicient to maintain it in position. If not, I a pawl,adjacent to the slip-journal may he i provided to prevent dropping ofthe hanger jwhen once raised, but the device may be 1 worked without anysuch attachment.

1 What I claim and desire to secure by Letters Patent of the UnitedStates is l 1. In a device of the class described a supporting frame, aplurality of spiral conveyors revolubly mounted in the frame adapted tol enter into a retort, and means for bringing the said conveyersmto andout of registry with the mouth of the retort.

2. In a device of the class described, a plurality of spiral conveyorsaxially movable 1 with relation to horizontal retorts, a carriage, j aframe carried by the carr1age, a movable I support carried by the frame,and a journalbox in which the spiral conveyors are revolubly mountedcarried .by the support, substantially as shown and described.

3. In a device of the class described, a plu- I rality of spiralconveyors axially niz-vable in relation to horizontal retorts andrevolubly mounted in journal-boxes, a hanger supporting thejournal-boxes, and means [or displacing the hanger and journal boxes ina vertical direction, substantially as shown and described. In witnesswhereof I have hereunto set my 1 hand in presence of two witnesses.

Cll RlSTl AN Elll JG.

l Witnesses;

WM. llAnN, Ennas'r EUTENMAN.

cause the end of the spiral convcy'er to drop

